Biotechnology

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

• convert the DNA into gel

• cut the DNA into fragments

• change the color of the DNA

• produce longer sections of DNA

DNA fingerprinting works because

• Most genes are dominant
• All organisms contain RNA
• The most important genes are different among most people
• No two people, except identical twins, have exactly the same DNA 

What is the purpose of gel electrophoresis?

• helps cut DNA
• count the genes in DNA
• separates DNA based on size
• allows for an exact replicated organism

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

• DNA is negatively charged so attracted to the positive end of the unit
• DNA is positively charged to attracted to the negative end of the unit
• the agarose gel in negatively charged
• the agarose gel is positively charged

In gel electrophoresis, the largest DNA fragment will appear

• closest to the starting wells
• farthest from the starting wells
• three quarters away from the starting wells
• it depends on how many fragments there are

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

• It allows the strands of DNA to be cut into various lengths for testing
• It restricts the number of base pairs that can be tested in a sample
• It makes the testing simpler by moving the strands into the gel faster
• It charges the DNA strands

Which suspect is likely guilty?

• Suspect #1
• Suspect #2
• Suspect #3

Which is the correct order for the PCR process

• denaturation, elongation, annealing

• annealing, elongation, denaturation

• denaturation, annealing, elongation

• annealing, denaturation, elongation

Process of determining the precise order of nucleotides within a segment of DNA

• Gel electrophoresis

• Polymerase chain reaction

• DNA sequencing

• DNA amplification

Choose the correct term to match the definition:

short nucleic acid that provides a starting point for DNA synthesis

• short tandem repeat

• agarose gel

• Taq polymerase

• primer